1QLP

2.0 ANGSTROM STRUCTURE OF INTACT ALPHA-1-ANTITRYPSIN: A CANONICAL TEMPLATE FOR ACTIVE SERPINS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Topography of a 2.0 A Structure of Alpha1-Antitrypsin Reveals Targets for Rational Drug Design to Prevent Conformational Disease.

Elliott, P.R.Pei, X.Y.Dafforn, T.Lomas, D.A.

(2000) Protein Sci. 9: 1274

  • DOI: 10.1110/ps.9.7.1274

  • PubMed Abstract: 
  • Members of the serpin family of serine proteinase inhibitors play important roles in the inflammatory, coagulation, fibrinolytic, and complement cascades. An inherent part of their function is the ability to undergo a structural rearrangement, the st ...

    Members of the serpin family of serine proteinase inhibitors play important roles in the inflammatory, coagulation, fibrinolytic, and complement cascades. An inherent part of their function is the ability to undergo a structural rearrangement, the stressed (S) to relaxed (R) transition, in which an extra strand is inserted into the central A beta-sheet. In order for this transition to take place, the A sheet has to be unusually flexible. Malfunctions in this flexibility can lead to aberrant protein linkage, serpin inactivation, and diseases as diverse as cirrhosis, thrombosis, angioedema, emphysema, and dementia. The development of agents that control this conformational rearrangement requires a high resolution structure of an active serpin. We present here the topology of the archetypal serpin alpha1-antitrypsin to 2 A resolution. This structure allows us to define five cavities that are potential targets for rational drug design to develop agents that will prevent conformational transitions and ameliorate the associated disease.


    Related Citations: 
    • Wildtype Alpha1-Antitrypsin is in the Canonical Inhibitory Conformation
      Elliott, P.R.,Abrahams, J.-P.,Lomas, D.A.
      (1998) J.Mol.Biol. 275: 419


    Organizational Affiliation

    Department of Medicine, University of Cambridge, The Wellcome Trust Centre for Molecular Mechanisms in Disease, Cambridge Institute for Medical Research, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALPHA-1-ANTITRYPSIN
A
394Homo sapiensGene Names: SERPINA1 (AAT, PI)
Find proteins for P01009 (Homo sapiens)
Go to Gene View: SERPINA1
Go to UniProtKB:  P01009
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.231 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 114.680α = 90.00
b = 39.260β = 104.21
c = 90.270γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-09-27
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance